Engineering News-Record (ENR) recently released its “Top 600 Specialty Contractors” list, which includes the largest revenue-generating glazing and curtainwall firms in the country.

The glazing and curtainwall category ranked eighth of 16 trades in terms of revenue share among all specialty trades that were included. The top firms in the category totaled just under $2.1 billion. According to ENR, the segment saw a 53.4-percent increase in revenue compared to the previous year, which was by far the largest percentage jump of any sector included in the list.

Enclos, which was absent from the list last year, was the top glazing company in revenue in 2016 and finished 39th overall. Harmon Inc., which topped last year’s list, was No. 2 in the sector and moved up two spots to No. 78 overall compared to last year.

[Walters and Wolf, which was ranked a top company in past years, isn’t on this year’s list. The company ranked between Enclos and Harmon in USGlass magazine’s list of top glaziers earlier this year. The No. 1 firm in that list, Permasteelisa, is also not present in ENR’s rankings.]

Most of the glazing firms that made ENR’s Top 600 Specialty Contractors list climbed in the overall rankings compared to the 2016 edition.

Here are the top-10 glazing and curtainwall firms:

1 – Enclos Corp., Eagan, Minn.
$452 million – No. 39 overall (not ranked in 2016)

2 – Harmon, Bloomington, Minn.
$270.9 million – No. 78 overall (No. 80 in 2016)

3 – Benson Industries Inc., Portland, Ore.
$260 million – No. 85 overall (No. 84 in 2016)

4- W&W Glass LLC, Nanuet, N.Y.
$180 million – No. 137 overall (No. 152 in 2016)

5 – Architectural Glass & Aluminum Co. Inc., Livermore, Calif.
$124 million – No. 194 (No. 214 on 2016)

6 – Crown Corr Inc., Gary, Ind.
$122.6 million – *No. 105 overall (No. 174 in 2016)

7 – Karas & Karas Glass Co. Inc., Boston, Mass.
$64.6 million – No. 255 overall (No. 295 in 2016)

8 – Alliance Glazing Technologies, Romeoville, Ill.
$77 million – No. 298 overall (Not ranked in 2016)

9 – Pioneer Cladding & Glazing Systems LLC, Mason, Ohio
$56.3 million – No. 373 overall (No. 257 in 2016)

10 – Haley-Greer Inc., Dallas, Texas
$48 million – No. 414 overall (No. 443 in 2016)

*Also listed in sheet metal category; stated revenue doesn’t represent total for overall ranking, only for glazing portion.

USGlass magazine also publishes an annual list of the nation’s top contract glaziers. Check out our 2017 list, published in January, here, and be on the lookout for the upcoming edition in 2018.